﻿<!DCTYPE html>
<html>
<head>
<script type="text/javascript" charset="UTF-8" src="prefixfree.min.js"></script>
<style type="text/css">
/*基本样式*/

body {
	background: url('http://www.w3cplus.com/demo/css3/minimal-login-ui/bg.jpg') no-repeat center fixed;
	background-size: 100% 100%;/*让背景图全屏显示，常用来制作全屏背景*/
}
header{
color:white;
margin:auto 50px;
}
.content {
	width: 600px;
	height: 420px;
	margin: 50px auto;
}
/*登录表单form样式*/
.login-form {
  width:400px;
  height:177px;
  margin:70px auto 0;
  padding-top:73px;
  position:relative;/*为用户头像定位做一个参照点*/
  background-image:-*-linear-gradient(top,rgb(255,255,255),rgb(242,242,242));/*渐变效果制作*/
  box-shadow:0 3px 3px rgba(21,62,78,0.8);/*阴影效果实现*/
}
/*使用伪类制作用户头像效果*/
.login-form:before {
  content:"";
  position:absolute;
  top:-50px;
  left:150px;
  width:102px;
  height:102px;
  padding:2px;
  border:1px solid rgb(216,216,219);
  background:#fff url("http://www.w3cplus.com/demo/css3/minimal-login-ui/profilepicture.jpg") no-repeat 2px 2px;/*加载用户头像*/
}
/*注册提示信息*/
.not-registered {
  position:absolute;
  color:rgb(153,153,153);
  font-weight:bold;
  top:calc(100% + 20px);/*相当于bottom:-66px(div.not-registered自身的高度46px加上向下移动的20px)*/
  background-color:rgb(255,255,255);
  width:400px;
  height:46px;
  margin:0 auto;
  line-height:46px;
  text-align: center;
  box-shadow:0 3px 3px rgba(21,62,78,0.8);
}
.not-registered a {
  margin-left:5px;
  text-decoration: none;
  color:rgb(52,119,182);
  cursor: pointer;
}
/*调用服务器字体*/
@font-face {
  font-family: 'loginform-icon';
  src: url("http://www.w3cplus.com/demo/css3/minimal-login-ui/font/loginform-icon.eot");
  src: url("http://www.w3cplus.com/demo/css3/minimal-login-ui/font/loginform-icon.eot?#iefix") format('embedded-opentype'),
    url("http://www.w3cplus.com/demo/css3/minimal-login-ui/font/loginform-icon.woff") format('woff'),
    url("http://www.w3cplus.com/demo/css3/minimal-login-ui/font/loginform-icon.ttf") format('truetype'),
    url("http://www.w3cplus.com/demo/css3/minimal-login-ui/font/loginform-icon.svg#loginform-icon") format('svg');
  font-weight: normal;
  font-style: normal;
}
/*表单内部元素样式设置*/
.login-form div {
  width:216px;
  height:28px;
  margin:20px auto;
  position:relative;
  line-height:28px;
  border:none;
}
/*用户和密码的icon制作*/
.login-form .user-icon, 
.login-form .password-icon {
  display:inline-block;
  font-family: 'loginform-icon';
  font-size:15px;
  text-align:center;
  line-height:28px;
  color:rgb(153,153,153);
  position:absolute;
  left:1px;
  top:1px;
  background-color:rgb(255,255,255);
  border:none;
  border-right:1px solid rgb(229,229,232);
  width:30px;
  height:28px;
  transition: all 300ms linear;
}
/*表单input的样式*/
.login-form .username input, .login-form .password input {
  height:100%;
  width:calc(100% - 40px);/*使用calc计算表单的宽度（其中40px是用来放icon的空间）*/
  padding-left:40px;
  border-radius:2px;
  border:1px solid;
  border-color:rgb(229,229,232) rgb(220,220,221) rgb(213,213,213) rgb(220,220,221);
  display:block;
  transition: all 300ms linear;
}
/*使用伪类制作三角效果*/
.login-form .icon:before, .login-form .icon:after {
  content:"";
  position:absolute;
  top:10px;
  left:30px;
  width:0;
  height:0;
  border:4px solid transparent;
  border-left-color:rgb(213,213,213);
}
/*表单焦点状态下效果*/
.login-form .username input:focus, .login-form .password input:focus {
  border-color:rgb(69,153,228);
  box-shadow:0 0 2px 1px rgb(200,223,244);
}
/*这个是文本框选中时用户、密码图标颜色变化*/
.login-form .username input:focus + span, .login-form .password input:focus + span {
  background:-*-linear-gradient(top,rgb(255,255,255),rgb(245,245,245));
  color:rgb(51,51,51);
}
/*这个是文本框选中时右向三角的颜色变化*/
.login-form .username input:focus + span:after, .login-form .password input:focus + span:after {
  border-left-color:rgb(0,0,0);
}

.login-form .account-control label {
  margin-left:24px;
  font-size:12px;
  font-family: Arial, Helvetica, sans-serif;
  cursor:pointer;
}
/*按钮效果*/
.login-form button[type="submit"] {
  color:#fff;
  font-weight:bold;
  float:right;
  width:68px;
  height:30px;
  position:relative;
  background:-*-linear-gradient(top,rgb(74,162,241),rgb(52,119,182)) 1px 0 no-repeat,
       -*-linear-gradient(top,rgb(52,118,181),rgb(36,90,141)) left top no-repeat;
  background-size:66px 28px,68px 29px;
  border:none;
  border-top:1px solid rgb(52,118,181);
  border-radius:2px;
  box-shadow:inset 0 1px 0 rgb(86,174,251);
  text-shadow:0 1px 1px rgb(51,113,173);
  transition: all 200ms linear;
}
.login-form button[type="submit"]:hover {
  text-shadow:0 0 2px rgb(255,255,255);
  box-shadow:inset 0 1px 0 rgb(86,174,251),0 0 10px 3px rgba(74,162,241,0.5);
}
.login-form button[type="submit"]:active {
  background:-*-linear-gradient(top,rgb(52,119,182),rgb(74,162,241)) 1px 0 no-repeat,
       -*-linear-gradient(top,rgb(52,118,181),rgb(36,90,141)) left top no-repeat;
}
/*自定义复选框效果，将复选框隐藏。将自定义的复选框显示出来替代默认复选框*/
.login-form .account-control input {
  width:0px;
  height:0px;
}
/*自定义复选框未选中状态样式，这里是2层背景色拼装成的checkbox样式*/
.login-form label.check {
  position:absolute;
  left:0;
  top:50%;
  margin:-8px 0;
  display:inline-block;
  width:16px;
  height:16px;
  line-height: 16px;
  text-align:center;
  border-radius:2px;
  background:-*-linear-gradient(top,rgb(255,255,255),rgb(246,246,246)) 1px 1px no-repeat,
       -*-linear-gradient(top,rgb(227,227,230),rgb(165,165,165)) left top no-repeat;
  background-size:14px 14px,16px 16px;
}
/*自定义复选框选中状态样式*/
.login-form .account-control input:checked + label.check:before {
  content:attr(data-on);
  font-family:loginform-icon;
}
</style>
</head>
<body>
<div class="content">
<form action="" method="post" class="login-form">
<div class="username">
<input type="text" name="username" placeholder="" autocomplete="on" />
<span class="user-icon icon">u</span>
</div>
<div class="password">
<input type="password" name="password" placeholder="" />
<span class="password-icon icon">p</span>
</div>
<div class="account-control">
<input type="checkbox" name="Remember me" id="Remember me" value="Remember me" checked="checked" />
<label for="Remember me" data-on="c" class="check"></label>
<label for="Remember me" class="info">Remember me</label>
<button type="submit">Login</button>
</div>
</form>
</div>
</body>
</html>